| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.sling.cassandra.resource.provider.mapper; |
| |
| |
| import org.apache.commons.codec.binary.Base64; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.security.MessageDigest; |
| import java.security.NoSuchAlgorithmException; |
| |
| /** |
| * This class generates a unique key for a given path and that key is used as the primary key when the particular resource stored in Cassandra. |
| * Key generates by hashing the UTF-8 bytes of the path string with SHA1 function. |
| */ |
| public class DefaultCassandraMapperImpl implements CassandraMapper { |
| |
| public String getCQL(String columnFamilySelector, String path) throws CassandraMapperException { |
| MessageDigest md = null; |
| try { |
| md = MessageDigest.getInstance("SHA1"); |
| String rowID = new String(Base64.encodeBase64(md.digest(path.getBytes("UTF-8")))); |
| return "select * from "+columnFamilySelector+" where KEY = '"+rowID+"'"; |
| } catch (NoSuchAlgorithmException e) { |
| throw new CassandraMapperException(e.getMessage()); |
| } catch (UnsupportedEncodingException e) { |
| throw new CassandraMapperException(e.getMessage()); |
| } |
| } |
| } |